Trading bots, Expert Advisors and AI: what is true and what is marketing

A trading bot is a program that places orders by itself according to coded rules. An Expert Advisor is a bot on the MetaTrader platform. “AI in trading” is mostly marketing for off-the-shelf bots or, increasingly, scams. Automation doesn't create an edge; it just executes a rule someone came up with.

What it is

Professional algorithmic trading exists and accounts for a huge share of exchange volume, but it's run by firms with infrastructure, data and research teams. Bots sold online are a completely different category.

The Polish Financial Supervision Authority (KNF) has repeatedly warned about fake “AI-powered” investment platforms advertised using the images of well-known people. The KNF public warning list can be checked on its website.

How people use it

off-the-shelf bots and EAs bought online
grid bots on crypto exchanges
“AI” that's supposed to make money by itself
your own strategies automated in TradingView and MetaTrader

What the research and evidence say

The results bot sellers present are usually backtests or short periods on selected accounts. If a bot really had a stable edge, selling it to thousands of customers would quickly destroy it. Research on data mining shows how easy it is to build a great-looking backtest with no edge at all.

Weaknesses

the edge is in the rule, not the automation
sellers' backtests are fitted to history
some “AI” offers are scams
an automated system won't recognise a change in market conditions unless its rule provides for it

What order flow shows

Professional algorithms on futures exchanges are largely built on order flow data: the order book, the flow of trades, changes in liquidity. A bot sold online usually runs on candlestick chart indicators. The difference in data quality is enormous.

Indicators vs order flow

Every indicator and every pattern in this section is built from the same data: a candle's open, high, low, close and sometimes volume. They're derivatives of price, showing the effect rather than the cause. Order flow looks at what price is made of: who was buying and selling aggressively (delta), where limit orders were waiting (the order book) and at which prices the market accepted trade (the volume profile).

On CME futures this data is real and comes from one central market. Spot forex doesn't have it: platforms show tick volume, the number of price changes at a single provider.

To be fair: order flow isn't the Holy Grail. It takes learning, it can be noisy, big players hide some of their orders, and an edge only comes from a process and risk control. But it gives you information that simply isn't on a candlestick chart.

How to use it sensibly

check whether the firm is on a regulator's warning list (in Poland, the KNF)
don't trust a backtest without out-of-sample results
if you automate, automate your own tested rule

Glossary: Backtest
Glossary: Overfitting
Glossary: HFT (high-frequency trading)
Atlas of biases: Overfitting
Atlas of biases: Authority bias
Atlas of biases: The illusion of control
Also under the microscope: Scalping
Also under the microscope: Day trading
Also under the microscope: Swing trading

Frequently asked questions

Do trading bots work?

A bot executes a rule. If the rule has no edge, the bot just loses faster. Off-the-shelf bots from the internet rarely have properly documented results.

Can AI make money in the market by itself?

Funds use machine learning, but with teams, data and infrastructure. Regulators such as the KNF often flag “AI that makes money for you” offers as scams.

What is an Expert Advisor?

A program that trades automatically on the MetaTrader platform according to coded rules.

Educational content, not investment advice. No signals, entries, stops or position sizes.